centrifugal vs crooked

centrifugal

adj
  • Tending, or causing, to recede from the center. 

  • Expanding first at the summit, and later at the base, as a flower cluster. 

  • Having the radicle turned toward the sides of the fruit, as some embryos. 

noun
  • A rotating machine used to separate massecuite into sugar crystals and molasses. 

crooked

adj
  • Not straight; having one or more bends or angles. 

  • Set at an angle; not vertical or square. 

  • Dishonest or illegal; corrupt. 

How often have the words centrifugal and crooked occurred in a corpus of books? (source: Google Ngram Viewer )